Get response code : HttpURLConnection « Network « Java Tutorial [PDF]

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Get response code : HttpURLConnection « Network « Java Tutorial

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Java Tutorial (/Tutorial/Java/CatalogJava.htm) / Network (/Tutorial/Java/0320__Network/Catalog0320__Network.htm) / HttpURLConnection (/Tutorial/Java/0320__Network/0050__HttpURLConnection.htm) /

import java.net.HttpURLConnection; import java.net.URL; import java.util.Date; public class Main{ public static void main(String args[]) throws Exception { URL url = new URL("http://www.google.com"); HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();

System.out.println("Response code is " + httpCon.getResponseCode()); } }

19.6.HttpURLConnection 19.6.1.

Get the date of a url connection (/Tutorial/Java/0320__Network/Getthedateofaurlconnection.htm)

19.6.2.

Get the document expiration date (/Tutorial/Java/0320__Network/Getthedocumentexpirationdate.htm)

19.6.3.

Get the document Last-modified date (/Tutorial/Java/0320__Network/GetthedocumentLastmodifieddate.htm)

19.6.4.

Show the content type (/Tutorial/Java/0320__Network/Showthecontenttype.htm)

19.6.5.

Show the content length (/Tutorial/Java/0320__Network/Showthecontentlength.htm)

19.6.6.

Display request method (/Tutorial/Java/0320__Network/Displayrequestmethod.htm)

19.6.7.

Get response code

19.6.8.

Display response message (/Tutorial/Java/0320__Network/Displayresponsemessage.htm)

19.6.9.

Display header information (/Tutorial/Java/0320__Network/Displayheaderinformation.htm)

19.6.10.

Download and display the content (/Tutorial/Java/0320__Network/Downloadanddisplaythecontent.htm)

19.6.11.

A Web Page Source Viewer (/Tutorial/Java/0320__Network/AWebPageSourceViewer.htm)

19.6.12.

Reading from a URLConnection (/Tutorial/Java/0320__Network/ReadingfromaURLConnection.htm)

19.6.13.

Use BufferedReader to read content from a URL (/Tutorial/Java/0320__Network/UseBufferedReadertoreadcontentfromaURL.htm)

19.6.14.

Check if a page exists (/Tutorial/Java/0320__Network/Checkifapageexists.htm)

19.6.15.

Identify ourself to a proxy (/Tutorial/Java/0320__Network/Identifyourselftoaproxy.htm)

19.6.16.

Connect through a Proxy (/Tutorial/Java/0320__Network/ConnectthroughaProxy.htm)

19.6.17.

java.net.Authenticator can be used to send the credentials when needed (/Tutorial/Java/0320__Network/javanetAuthenticatorcanbeusedtosendthecredentialswhenneeded.htm)

19.6.18.

Read data from a URL (/Tutorial/Java/0320__Network/ReaddatafromaURL.htm)

19.6.19.

Dump a page using the HTTPS protocol (/Tutorial/Java/0320__Network/DumpapageusingtheHTTPSprotocol.htm)

19.6.20.

Save URL contents to a file (/Tutorial/Java/0320__Network/SaveURLcontentstoafile.htm)

19.6.21.

Http connection Utilities (/Tutorial/Java/0320__Network/HttpconnectionUtilities.htm)

19.6.22.

Parsing and formatting HTTP dates as used in cookies and other headers. (/Tutorial/Java/0320__Network/ParsingandformattingHTTPdatesasusedincookiesandotherheaders.htm)

19.6.23.

Last Modified (/Tutorial/Java/0320__Network/LastModified.htm)

19.6.24.

URL connection and proxy (/Tutorial/Java/0320__Network/URLconnectionandproxy.htm)

19.6.25.

Http Constants (/Tutorial/Java/0320__Network/HttpConstants.htm)

19.6.26.

Http Header Helper (/Tutorial/Java/0320__Network/HttpHeaderHelper.htm)

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19.6.27.

A utility class for parsing HTTP dates as used in cookies and other headers (/Tutorial/Java/0320__Network/AutilityclassforparsingHTTPdatesasusedincookiesandotherheaders.htm)

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